Hi Jayeff!
This is actually due to a "custom title" on a wiki. On iFixit, the name of the device builds the URL for device wikis, but you can also add a different title to display on the wiki. This helps for devices with many names etc, unfortunately, most of the site pulls the URL device, not the custom title.
In this case someone got confused, or co-opted an old device page and we ended up with some contrary information.
[image|94165|size=medium|caption=URL reads Ultra 6, title reads Ultra 7.]
You are more than welcome to fix this discrepancy with a simple edit to the title, swapping it back to Ultra 6, and you can make an Ultra 7 page for good measure ;)
Good catch! Thanks for posting =)
